Help with CD to Mylink

[rocknroll_jeph]

I am posting for a friend who has just bought a used Mylink screen from a 2015 Camaro to put in his 2012. I did some research for him and found there are harnesses, but we live outside the US and those options are limited when it comes to shipping.

I was hoping someone could help point me to a thread that shows how to do it by hand or maybe even some detailed labels for what each wire does so he can have some guidance in getting it all hooked up. I've attached some photos that he send me for reference.

Thanks in advance!